Abstract：The AC breakdown characteristics of conductor-plane gap under different combustion conditions were carried by the simulation forest fire test platform in this paper, and the influence mechanisms of vegetation types, combustion intensity, wind speed and slope gradient on the breakdown characteristic of gap have been analyzed. Results show that, the breakdown characteristics of gap have big differences under different vegetation types flame. Under the conditions of fir branches and fir wood crib flames, the AC breakdown voltage of gap can decline to about 10% and 20% of that in the pure air gap, respectively. When the gap is full bridged by the flame, the combustion intensity has little influence on the breakdown characteristics of gap. The dielectric strength of gap is remarkably decreased with the increase of slope gradient. Hence, to the actual transmission lines, it is need to focus on the place with bigger slope gradient. Especially the location of "V" shape valley, which is more likely to appear the tripping accidents due to the forest fire.
黎鹏, 阮江军, 黄道春, 魏晗, 秦知航, 龙明洋. 模拟山火条件下导线-板间隙击穿特性影响因素分析[J]. 电工技术学报, 2018, 33(1): 195-201.
Li Peng, Ruan Jiangjun, Huang Daochun, Wei Han, Qin Zhihang, Long Mingyang. Influence Factors Analysis of the Conductor-Plane Gap Breakdown Characteristic under Simulation Forest Fire Condition. Transactions of China Electrotechnical Society, 2018, 33(1): 195-201.
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